> On 24. Apr 2021, at 22:52, Nelson H. F. Beebe <be...@math.utah.edu> wrote:
> 
> [This is temporarily off the openindiana-discuss mailing list]
> 
> You wrote on Sat, 24 Apr 2021 11:58:06 -0400
> 
>>> That is after the boot loader menu.
>>> The second page of loader includes an option to boot from alt BEs.
> 
> If I use the virt-manager menu to send Ctl-Alt-Del, I get this output:
> 
>       Press ESC for boot menu.
> 
> I quickly press ESC, producing:
> 
>       1. AHCI/0: QEMU HARDDISK ...
>       2. DVD/CD ...
>       3. Legacy option rom
>       4. iPXE ...
> 
> I press 1 and get
> 
>       Booting from Hard Disk...
>       BIOS drive C: is disk0
>       ZFS: i/o error - all block copies unavailable
>       ZFS: can't read MOS of pool rpool
> 
>       Can't find /boot/loader
> 
>       Can't find /boot/zfsloader
> 
>       illumos/x86 boot
>       Default: /boot/loader
>       boot:
> 
> At that point, I no idea how to get to a ``second page of loader
> options.''
> 


At that point, you can’t. You got to boot loader stage1 program (gptzfsboot) 
and its prompt (boot: prompt). It is failing to read zfs pool to load and start 
next stage - /boot/loader). At this point, only simple diagnostics is possible 
- you can enter: status to get list of disks and ?path (like ?/) to get 
directory listing from path. Also you can enter alternate file name to be 
loaded and alternate disk device to load from. See also gptzfsboot(5).

I can not guess what does trigger this situation, but one option is to start 
from alternate media (usb/iso), and check out what is going on there - what 
does zpool scrub tell etc.

rgds,
toomas

> The boot prompt is opaque: it only prompts again when I try input like
> "?", "help", "boot", ESCape, F1, F2, ..., F12, PageUp, PageDown, ....
> 
> I find it often aggravating that BIOS code is so low level and
> unusable without a separate manual.
> 
> -------------------------------------------------------------------------------
> - Nelson H. F. Beebe                    Tel: +1 801 581 5254                  
> -
> - University of Utah                    FAX: +1 801 581 4148                  
> -
> - Department of Mathematics, 110 LCB    Internet e-mail: be...@math.utah.edu  
> -
> - 155 S 1400 E RM 233                       be...@acm.org  be...@computer.org 
> -
> - Salt Lake City, UT 84112-0090, USA    URL: http://www.math.utah.edu/~beebe/ 
> -
> -------------------------------------------------------------------------------
> 
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